Why is the power of quadratic factors in DoE that low

[#1]

I have created several experimental designs, including ones with quadratic effects. I’ve noticed that the power of these quadratic effects is always relatively low. Why is that the case? What can be done about it?

Regards

Klaus

[#2]

Assuming you're using the Custom Designer, the default behavior is to create a design that focuses on a small number of runs, rather than maximizing power. You can use the Design Explorer (GIF below) to explore what adding more runs does to power.